1 /*****************************************************************************
2 * ogg.c : ogg stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: ogg.c,v 1.41 2003/10/23 16:48:45 gbazin Exp $
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
31 #include <vlc/input.h>
33 #include <sys/types.h>
37 #include <codecs.h> /* BITMAPINFOHEADER, WAVEFORMATEX */
39 #define OGG_BLOCK_SIZE 4096
41 /*****************************************************************************
42 * Definitions of structures and functions used by this plugins
43 *****************************************************************************/
44 typedef struct logical_stream_s
46 ogg_stream_state os; /* logical stream of packets */
49 int i_cat; /* AUDIO_ES, VIDEO_ES */
51 vlc_fourcc_t i_fourcc;
54 es_descriptor_t *p_es;
55 int b_selected; /* newly selected */
57 /* the header of some logical streams (eg vorbis) contain essential
58 * data for the decoder. We back them up here in case we need to re-feed
59 * them to the decoder. */
62 ogg_packet *p_packets_backup;
64 /* program clock reference (in units of 90kHz) derived from the previous
67 mtime_t i_interpolated_pcr;
68 mtime_t i_previous_pcr;
70 /* info from logical streams */
76 /* codec specific stuff */
77 BITMAPINFOHEADER *p_bih;
79 int i_theora_keyframe_granule_shift;
85 ogg_sync_state oy; /* sync and verify incoming physical bitstream */
87 int i_streams; /* number of logical bitstreams */
88 logical_stream_t **pp_stream; /* pointer to an array of logical streams */
90 /* current audio and video es */
91 logical_stream_t *p_stream_video;
92 logical_stream_t *p_stream_audio;
93 logical_stream_t *p_stream_spu;
95 /* program clock reference (in units of 90kHz) derived from the pcr of
104 /* OggDS headers for the new header format (used in ogm files) */
105 typedef struct stream_header_video
109 } stream_header_video;
111 typedef struct stream_header_audio
113 ogg_int16_t channels;
114 ogg_int16_t blockalign;
115 ogg_int32_t avgbytespersec;
116 } stream_header_audio;
118 typedef struct stream_header
123 ogg_int32_t size; /* size of the structure */
125 ogg_int64_t time_unit; /* in reference time */
126 ogg_int64_t samples_per_unit;
127 ogg_int32_t default_len; /* in media time */
129 ogg_int32_t buffersize;
130 ogg_int16_t bits_per_sample;
135 stream_header_video video;
137 stream_header_audio audio;
141 /* Some defines from OggDS */
142 #define PACKET_TYPE_HEADER 0x01
143 #define PACKET_TYPE_BITS 0x07
144 #define PACKET_LEN_BITS01 0xc0
145 #define PACKET_LEN_BITS2 0x02
146 #define PACKET_IS_SYNCPOINT 0x08
148 /*****************************************************************************
150 *****************************************************************************/
151 static int Activate ( vlc_object_t * );
152 static void Deactivate( vlc_object_t * );
153 static int Demux ( input_thread_t * );
154 static int Control ( input_thread_t *, int, va_list );
156 /* Stream managment */
157 static int Ogg_ElemStreamStart ( input_thread_t *, demux_sys_t *, int );
158 static void Ogg_ElemStreamStop ( input_thread_t *, demux_sys_t *, int );
160 /* Bitstream manipulation */
161 static int Ogg_Check ( input_thread_t *p_input );
162 static int Ogg_ReadPage ( input_thread_t *, demux_sys_t *, ogg_page * );
163 static void Ogg_UpdatePCR ( logical_stream_t *, ogg_packet * );
164 static void Ogg_DecodePacket ( input_thread_t *p_input,
165 logical_stream_t *p_stream, ogg_packet * );
167 static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg);
168 static int Ogg_FindLogicalStreams( input_thread_t *p_input,demux_sys_t *p_ogg);
169 static void Ogg_EndOfStream( input_thread_t *p_input, demux_sys_t *p_ogg );
171 /*****************************************************************************
173 *****************************************************************************/
175 set_description( _("ogg stream demuxer" ) );
176 set_capability( "demux", 50 );
177 set_callbacks( Activate, Deactivate );
178 add_shortcut( "ogg" );
181 /*****************************************************************************
183 *****************************************************************************/
184 static int Ogg_ElemStreamStart( input_thread_t *p_input,
185 demux_sys_t *p_ogg, int i_stream )
187 #define p_stream p_ogg->pp_stream[i_stream]
188 if( !p_stream->p_es )
190 msg_Warn( p_input, "stream[%d] unselectable", i_stream );
193 if( p_stream->i_activated )
195 msg_Warn( p_input, "stream[%d] already selected", i_stream );
199 if( !p_stream->p_es->p_decoder_fifo )
201 vlc_mutex_lock( &p_input->stream.stream_lock );
202 input_SelectES( p_input, p_stream->p_es );
203 vlc_mutex_unlock( &p_input->stream.stream_lock );
205 p_stream->i_activated = p_stream->p_es->p_decoder_fifo ? 1 : 0;
207 /* Feed the backup header to the decoder */
208 if( !p_stream->b_force_backup )
211 for( i = 0; i < p_stream->i_packets_backup; i++ )
213 /* Set correct starting date in header packets */
214 p_stream->p_packets_backup[i].granulepos =
215 p_stream->i_interpolated_pcr * p_stream->f_rate / 90000;
217 Ogg_DecodePacket( p_input, p_stream,
218 &p_stream->p_packets_backup[i] );
222 return( p_stream->i_activated );
226 static void Ogg_ElemStreamStop( input_thread_t *p_input,
227 demux_sys_t *p_ogg, int i_stream )
229 #define p_stream p_ogg->pp_stream[i_stream]
231 if( !p_stream->i_activated )
233 msg_Warn( p_input, "stream[%d] already unselected", i_stream );
237 if( p_stream->p_es->p_decoder_fifo )
239 vlc_mutex_lock( &p_input->stream.stream_lock );
240 input_UnselectES( p_input, p_stream->p_es );
241 vlc_mutex_unlock( &p_input->stream.stream_lock );
244 p_stream->i_activated = 0;
249 /****************************************************************************
250 * Ogg_Check: Check we are dealing with an ogg stream.
251 ****************************************************************************/
252 static int Ogg_Check( input_thread_t *p_input )
255 int i_size = input_Peek( p_input, &p_peek, 4 );
257 /* Check for the Ogg capture pattern */
258 if( !(i_size>3) || !(p_peek[0] == 'O') || !(p_peek[1] == 'g') ||
259 !(p_peek[2] == 'g') || !(p_peek[3] == 'S') )
262 /* FIXME: Capture pattern might not be enough so we can also check for the
263 * the first complete page */
268 /****************************************************************************
269 * Ogg_ReadPage: Read a full Ogg page from the physical bitstream.
270 ****************************************************************************
271 * Returns VLC_SUCCESS if a page has been read. An error might happen if we
272 * are at the end of stream.
273 ****************************************************************************/
274 static int Ogg_ReadPage( input_thread_t *p_input, demux_sys_t *p_ogg,
275 ogg_page *p_oggpage )
278 data_packet_t *p_data;
281 while( ogg_sync_pageout( &p_ogg->oy, p_oggpage ) != 1 )
283 i_read = input_SplitBuffer( p_input, &p_data, OGG_BLOCK_SIZE );
287 p_buffer = ogg_sync_buffer( &p_ogg->oy, i_read );
288 p_input->p_vlc->pf_memcpy( p_buffer, p_data->p_payload_start, i_read );
289 ogg_sync_wrote( &p_ogg->oy, i_read );
290 input_DeletePacket( p_input->p_method_data, p_data );
296 /****************************************************************************
297 * Ogg_UpdatePCR: update the PCR (90kHz program clock reference) for the
299 ****************************************************************************/
300 static void Ogg_UpdatePCR( logical_stream_t *p_stream,
301 ogg_packet *p_oggpacket )
303 /* Convert the granulepos into a pcr */
304 if( p_oggpacket->granulepos >= 0 )
306 if( p_stream->i_fourcc != VLC_FOURCC( 't','h','e','o' ) )
308 p_stream->i_pcr = p_oggpacket->granulepos * 90000
313 ogg_int64_t iframe = p_oggpacket->granulepos >>
314 p_stream->i_theora_keyframe_granule_shift;
315 ogg_int64_t pframe = p_oggpacket->granulepos -
316 ( iframe << p_stream->i_theora_keyframe_granule_shift );
318 p_stream->i_pcr = ( iframe + pframe ) * 90000
322 p_stream->i_interpolated_pcr = p_stream->i_pcr;
326 p_stream->i_pcr = -1;
328 /* no granulepos available, try to interpolate the pcr.
329 * If we can't then don't touch the old value. */
330 if( p_stream->i_cat == VIDEO_ES )
331 /* 1 frame per packet */
332 p_stream->i_interpolated_pcr += (90000 / p_stream->f_rate);
333 else if( p_stream->i_bitrate )
334 p_stream->i_interpolated_pcr += ( p_oggpacket->bytes * 90000
335 / p_stream->i_bitrate / 8 );
339 /****************************************************************************
340 * Ogg_DecodePacket: Decode an Ogg packet.
341 ****************************************************************************/
342 static void Ogg_DecodePacket( input_thread_t *p_input,
343 logical_stream_t *p_stream,
344 ogg_packet *p_oggpacket )
347 data_packet_t *p_data;
348 vlc_bool_t b_trash = VLC_FALSE;
349 int i_header_len = 0;
352 if( p_stream->b_force_backup )
354 ogg_packet *p_packet_backup;
355 p_stream->i_packets_backup++;
356 switch( p_stream->i_fourcc )
358 case VLC_FOURCC( 'v','o','r','b' ):
359 case VLC_FOURCC( 's','p','x',' ' ):
360 case VLC_FOURCC( 't','h','e','o' ):
361 if( p_stream->i_packets_backup == 3 ) p_stream->b_force_backup = 0;
365 p_stream->b_force_backup = 0;
369 /* Backup the ogg packet (likely an header packet) */
370 p_stream->p_packets_backup =
371 realloc( p_stream->p_packets_backup, p_stream->i_packets_backup *
372 sizeof(ogg_packet) );
375 &p_stream->p_packets_backup[p_stream->i_packets_backup - 1];
377 p_packet_backup->bytes = p_oggpacket->bytes;
378 p_packet_backup->granulepos = p_oggpacket->granulepos;
380 if( p_oggpacket->granulepos >= 0 )
382 /* Because of vorbis granulepos scheme we must set the pcr for the
383 * 1st header packet so it doesn't get discarded in the
385 Ogg_UpdatePCR( p_stream, p_oggpacket );
388 p_packet_backup->packet = malloc( p_oggpacket->bytes );
389 if( !p_packet_backup->packet ) return;
390 memcpy( p_packet_backup->packet, p_oggpacket->packet,
391 p_oggpacket->bytes );
394 vlc_mutex_lock( &p_input->stream.control.control_lock );
395 if( p_stream->i_cat == AUDIO_ES && p_input->stream.control.b_mute )
399 vlc_mutex_unlock( &p_input->stream.control.control_lock );
401 /* Convert the pcr into a pts */
402 if( p_stream->i_fourcc == VLC_FOURCC( 'v','o','r','b' ) ||
403 p_stream->i_fourcc == VLC_FOURCC( 's','p','x',' ' ) )
405 if( p_stream->i_pcr >= 0 )
407 /* This is for streams where the granulepos of the header packets
408 * doesn't match these of the data packets (eg. ogg web radios). */
409 if( p_stream->i_previous_pcr == 0 &&
410 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY * 9/100 )
411 p_input->stream.p_selected_program->i_synchro_state =
414 p_stream->i_previous_pcr = p_stream->i_pcr;
416 /* Call the pace control */
417 if( p_input->stream.p_selected_program->i_synchro_state ==
419 input_ClockManageRef( p_input,
420 p_input->stream.p_selected_program,
424 /* The granulepos is the end date of the sample */
425 i_pts = ( p_stream->i_pcr < 0 ) ? 0 :
426 input_ClockGetTS( p_input, p_input->stream.p_selected_program,
429 /* Convert the granulepos into the next pcr */
430 Ogg_UpdatePCR( p_stream, p_oggpacket );
434 /* Convert the granulepos into the current pcr */
435 Ogg_UpdatePCR( p_stream, p_oggpacket );
437 if( p_stream->i_pcr >= 0 )
439 /* This is for streams where the granulepos of the header packets
440 * doesn't match these of the data packets (eg. ogg web radios). */
441 if( p_stream->i_previous_pcr == 0 &&
442 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY * 9/100 )
443 p_input->stream.p_selected_program->i_synchro_state =
446 p_stream->i_previous_pcr = p_stream->i_pcr;
448 /* Call the pace control */
449 if( p_input->stream.p_selected_program->i_synchro_state ==
451 input_ClockManageRef( p_input,
452 p_input->stream.p_selected_program,
456 /* The granulepos is the start date of the sample */
457 i_pts = ( p_stream->i_pcr < 0 ) ? 0 :
458 input_ClockGetTS( p_input, p_input->stream.p_selected_program,
462 if( !p_stream->p_es->p_decoder_fifo || b_trash )
464 /* This stream isn't currently selected so we don't need to decode it,
465 * but we did need to store its pcr as it might be selected later on */
469 if( !( p_pes = input_NewPES( p_input->p_method_data ) ) )
473 if( !( p_data = input_NewPacket( p_input->p_method_data,
474 p_oggpacket->bytes ) ) )
476 input_DeletePES( p_input->p_method_data, p_pes );
479 p_data->p_payload_end = p_data->p_payload_start + p_oggpacket->bytes;
481 p_pes->i_nb_data = 1;
482 p_pes->i_dts = p_pes->i_pts = i_pts;
483 p_pes->p_first = p_pes->p_last = p_data;
484 p_pes->i_pes_size = p_oggpacket->bytes;
486 if( p_stream->i_cat == SPU_ES ) p_pes->i_dts = 0;
488 if( p_stream->i_fourcc != VLC_FOURCC( 'v','o','r','b' ) &&
489 p_stream->i_fourcc != VLC_FOURCC( 's','p','x',' ' ) &&
490 p_stream->i_fourcc != VLC_FOURCC( 't','a','r','k' ) &&
491 p_stream->i_fourcc != VLC_FOURCC( 't','h','e','o' ) )
493 /* Remove the header from the packet */
494 i_header_len = (*p_oggpacket->packet & PACKET_LEN_BITS01) >> 6;
495 i_header_len |= (*p_oggpacket->packet & PACKET_LEN_BITS2) << 1;
498 p_pes->i_pes_size -= i_header_len;
501 if( p_stream->i_fourcc == VLC_FOURCC( 't','a','r','k' ) )
503 /* FIXME: the biggest hack I've ever done */
504 msg_Warn( p_input, "tark pts: "I64Fd", granule: "I64Fd,
505 p_pes->i_pts, p_pes->i_dts );
509 memcpy( p_data->p_payload_start,
510 p_oggpacket->packet + i_header_len,
511 p_oggpacket->bytes - i_header_len );
513 p_data->p_payload_end = p_data->p_payload_start + p_pes->i_pes_size;
514 p_data->b_discard_payload = 0;
516 input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
519 /****************************************************************************
520 * Ogg_FindLogicalStreams: Find the logical streams embedded in the physical
521 * stream and fill p_ogg.
522 *****************************************************************************
523 * The initial page of a logical stream is marked as a 'bos' page.
524 * Furthermore, the Ogg specification mandates that grouped bitstreams begin
525 * together and all of the initial pages must appear before any data pages.
527 * On success this function returns VLC_SUCCESS.
528 ****************************************************************************/
529 static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
531 ogg_packet oggpacket;
535 while( Ogg_ReadPage( p_input, p_ogg, &oggpage ) == VLC_SUCCESS )
537 if( ogg_page_bos( &oggpage ) )
540 /* All is wonderful in our fine fine little world.
541 * We found the beginning of our first logical stream. */
542 while( ogg_page_bos( &oggpage ) )
546 realloc( p_ogg->pp_stream, p_ogg->i_streams *
547 sizeof(logical_stream_t *) );
549 #define p_stream p_ogg->pp_stream[p_ogg->i_streams - 1]
551 p_stream = malloc( sizeof(logical_stream_t) );
552 memset( p_stream, 0, sizeof(logical_stream_t) );
554 /* Setup the logical stream */
555 p_stream->i_serial_no = ogg_page_serialno( &oggpage );
556 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
558 /* Extract the initial header from the first page and verify
559 * the codec type of tis Ogg bitstream */
560 if( ogg_stream_pagein( &p_stream->os, &oggpage ) < 0 )
562 /* error. stream version mismatch perhaps */
563 msg_Err( p_input, "Error reading first page of "
564 "Ogg bitstream data" );
568 /* FIXME: check return value */
569 ogg_stream_packetpeek( &p_stream->os, &oggpacket );
571 /* Check for Vorbis header */
572 if( oggpacket.bytes >= 7 &&
573 ! strncmp( &oggpacket.packet[1], "vorbis", 6 ) )
577 msg_Dbg( p_input, "found vorbis header" );
578 p_stream->i_cat = AUDIO_ES;
579 p_stream->i_fourcc = VLC_FOURCC( 'v','o','r','b' );
581 /* Signal that we want to keep a backup of the vorbis
582 * stream headers. They will be used when switching between
584 p_stream->b_force_backup = 1;
586 /* Cheat and get additionnal info ;) */
587 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
588 oggpack_adv( &opb, 88 );
589 p_stream->i_channels = oggpack_read( &opb, 8 );
590 p_stream->f_rate = oggpack_read( &opb, 32 );
591 oggpack_adv( &opb, 32 );
592 p_stream->i_bitrate = oggpack_read( &opb, 32 );
594 char title[sizeof("Stream") + 10];
595 input_info_category_t *p_cat;
596 sprintf( title, "Stream %d", p_ogg->i_streams );
597 p_cat = input_InfoCategory( p_input, title );
598 input_AddInfo( p_cat, _("Type"), _("Audio") );
599 input_AddInfo( p_cat, _("Codec"), _("Vorbis") );
600 input_AddInfo( p_cat, _("Sample Rate"), "%f",
602 input_AddInfo( p_cat, _("Channels"), "%d",
603 p_stream->i_channels );
604 input_AddInfo( p_cat, _("Bit Rate"), "%d",
605 p_stream->i_bitrate );
608 /* Check for Speex header */
609 else if( oggpacket.bytes >= 7 &&
610 ! strncmp( &oggpacket.packet[0], "Speex", 5 ) )
614 p_stream->i_cat = AUDIO_ES;
615 p_stream->i_fourcc = VLC_FOURCC( 's','p','x',' ' );
617 /* Signal that we want to keep a backup of the vorbis
618 * stream headers. They will be used when switching between
620 p_stream->b_force_backup = 1;
622 /* Cheat and get additionnal info ;) */
623 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
624 oggpack_adv( &opb, 224 );
625 oggpack_adv( &opb, 32 ); /* speex_version_id */
626 oggpack_adv( &opb, 32 ); /* header_size */
627 p_stream->f_rate = oggpack_read( &opb, 32 );
628 oggpack_adv( &opb, 32 ); /* mode */
629 oggpack_adv( &opb, 32 ); /* mode_bitstream_version */
630 p_stream->i_channels = oggpack_read( &opb, 32 );
631 p_stream->i_bitrate = oggpack_read( &opb, 32 );
633 char title[sizeof("Stream") + 10];
634 input_info_category_t *p_cat;
635 sprintf( title, "Stream %d", p_ogg->i_streams );
636 p_cat = input_InfoCategory( p_input, title );
637 input_AddInfo( p_cat, _("Type"), _("Audio") );
638 input_AddInfo( p_cat, _("Codec"), _("Speex") );
639 input_AddInfo( p_cat, _("Sample Rate"), "%f",
641 input_AddInfo( p_cat, _("Channels"), "%d",
642 p_stream->i_channels );
643 input_AddInfo( p_cat, _("Bit Rate"), "%d",
644 p_stream->i_bitrate );
645 msg_Dbg( p_input, "found speex header, channels: %i, "
646 "rate: %i, bitrate: %i",
647 p_stream->i_channels,
648 (int)p_stream->f_rate, p_stream->i_bitrate );
651 /* Check for Theora header */
652 else if( oggpacket.bytes >= 7 &&
653 ! strncmp( &oggpacket.packet[1], "theora", 6 ) )
658 int i_fps_denominator;
659 int i_keyframe_frequency_force;
662 msg_Dbg( p_input, "found theora header" );
664 p_stream->i_cat = VIDEO_ES;
665 p_stream->i_fourcc = VLC_FOURCC( 't','h','e','o' );
667 /* Signal that we want to keep a backup of the vorbis
668 * stream headers. They will be used when switching between
670 p_stream->b_force_backup = 1;
672 /* Cheat and get additionnal info ;) */
673 oggpackB_readinit(&opb, oggpacket.packet, oggpacket.bytes);
674 oggpackB_adv( &opb, 56 );
675 oggpackB_read( &opb, 8 ); /* major version num */
676 oggpackB_read( &opb, 8 ); /* minor version num */
677 oggpackB_read( &opb, 8 ); /* subminor version num */
678 oggpackB_read( &opb, 16 ) /*<< 4*/; /* width */
679 oggpackB_read( &opb, 16 ) /*<< 4*/; /* height */
680 oggpackB_read( &opb, 24 ); /* frame width */
681 oggpackB_read( &opb, 24 ); /* frame height */
682 oggpackB_read( &opb, 8 ); /* x offset */
683 oggpackB_read( &opb, 8 ); /* y offset */
685 i_fps_numerator = oggpackB_read( &opb, 32 );
686 i_fps_denominator = oggpackB_read( &opb, 32 );
687 oggpackB_read( &opb, 24 ); /* aspect_numerator */
688 oggpackB_read( &opb, 24 ); /* aspect_denominator */
689 i_keyframe_frequency_force = 1 << oggpackB_read( &opb, 5 );
690 oggpackB_read( &opb, 8 ); /* colorspace */
691 p_stream->i_bitrate = oggpackB_read( &opb, 24 );
692 oggpackB_read( &opb, 6 ); /* quality */
694 /* granule_shift = i_log( frequency_force -1 ) */
695 p_stream->i_theora_keyframe_granule_shift = 0;
696 i_keyframe_frequency_force--;
697 while( i_keyframe_frequency_force )
699 p_stream->i_theora_keyframe_granule_shift++;
700 i_keyframe_frequency_force >>= 1;
703 p_stream->f_rate = ((float)i_fps_numerator) /
706 "found theora header, bitrate: %i, rate: %f",
707 p_stream->i_bitrate, p_stream->f_rate );
709 char title[sizeof("Stream") + 10];
710 input_info_category_t *p_cat;
711 sprintf( title, "Stream %d", p_ogg->i_streams );
712 p_cat = input_InfoCategory( p_input, title );
713 input_AddInfo( p_cat, _("Type"), _("Video") );
714 input_AddInfo( p_cat, _("Codec"), _("Theora") );
715 input_AddInfo( p_cat, _("Frame Rate"), "%f",
717 input_AddInfo( p_cat, _("Bit Rate"), "%d",
718 p_stream->i_bitrate );
720 #else /* HAVE_OGGPACKB */
721 msg_Dbg( p_input, "the ogg demuxer has been compiled "
722 "without support for the oggpackB extension."
723 "The theora stream won't be decoded." );
726 #endif /* HAVE_OGGPACKB */
728 /* Check for Tarkin header */
729 else if( oggpacket.bytes >= 7 &&
730 ! strncmp( &oggpacket.packet[1], "tarkin", 6 ) )
734 msg_Dbg( p_input, "found tarkin header" );
735 p_stream->i_cat = VIDEO_ES;
736 p_stream->i_fourcc = VLC_FOURCC( 't','a','r','k' );
738 /* Cheat and get additionnal info ;) */
739 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
740 oggpack_adv( &opb, 88 );
741 oggpack_adv( &opb, 104 );
742 p_stream->i_bitrate = oggpack_read( &opb, 32 );
743 p_stream->f_rate = 2; /* FIXME */
745 "found tarkin header, bitrate: %i, rate: %f",
746 p_stream->i_bitrate, p_stream->f_rate );
748 char title[sizeof("Stream") + 10];
749 input_info_category_t *p_cat;
750 sprintf( title, "Stream %d", p_ogg->i_streams );
751 p_cat = input_InfoCategory( p_input, title );
752 input_AddInfo( p_cat, _("Type"), _("Video") );
753 input_AddInfo( p_cat, _("Codec"), _("tarkin") );
754 input_AddInfo( p_cat, _("Sample Rate"), "%f",
756 input_AddInfo( p_cat, _("Bit Rate"), "%d",
757 p_stream->i_bitrate );
761 else if( oggpacket.bytes >= 142 &&
762 !strncmp( &oggpacket.packet[1],
763 "Direct Show Samples embedded in Ogg", 35 ))
765 /* Old header type */
767 /* Check for video header (old format) */
768 if( GetDWLE((oggpacket.packet+96)) == 0x05589f80 &&
769 oggpacket.bytes >= 184 )
771 p_stream->i_cat = VIDEO_ES;
773 p_stream->p_bih = (BITMAPINFOHEADER *)
774 malloc( sizeof(BITMAPINFOHEADER) );
775 if( !p_stream->p_bih )
777 /* Mem allocation error, just ignore the stream */
782 p_stream->p_bih->biSize = sizeof(BITMAPINFOHEADER);
783 p_stream->p_bih->biCompression= p_stream->i_fourcc =
784 VLC_FOURCC( oggpacket.packet[68],
785 oggpacket.packet[69],
786 oggpacket.packet[70],
787 oggpacket.packet[71] );
788 msg_Dbg( p_input, "found video header of type: %.4s",
789 (char *)&p_stream->i_fourcc );
791 p_stream->f_rate = 10000000.0 /
792 GetQWLE((oggpacket.packet+164));
793 p_stream->p_bih->biBitCount =
794 GetWLE((oggpacket.packet+182));
795 if( !p_stream->p_bih->biBitCount )
796 p_stream->p_bih->biBitCount=24; // hack, FIXME
797 p_stream->p_bih->biWidth =
798 GetDWLE((oggpacket.packet+176));
799 p_stream->p_bih->biHeight =
800 GetDWLE((oggpacket.packet+180));
801 p_stream->p_bih->biPlanes= 1 ;
802 p_stream->p_bih->biSizeImage =
803 (p_stream->p_bih->biBitCount >> 3) *
804 p_stream->p_bih->biWidth *
805 p_stream->p_bih->biHeight;
808 "fps: %f, width:%i; height:%i, bitcount:%i",
809 p_stream->f_rate, p_stream->p_bih->biWidth,
810 p_stream->p_bih->biHeight,
811 p_stream->p_bih->biBitCount);
813 char title[sizeof("Stream") + 10];
814 input_info_category_t *p_cat;
815 sprintf( title, "Stream %d", p_ogg->i_streams );
816 p_cat = input_InfoCategory( p_input, title );
817 input_AddInfo( p_cat, _("Type"), _("Video") );
818 input_AddInfo( p_cat, _("Codec"), "%.4s",
819 (char *)&p_stream->i_fourcc );
820 input_AddInfo( p_cat, _("Frame Rate"), "%f",
822 input_AddInfo( p_cat, _("Bit Count"), "%d",
823 p_stream->p_bih->biBitCount );
824 input_AddInfo( p_cat, _("Width"), "%d",
825 p_stream->p_bih->biWidth );
826 input_AddInfo( p_cat, _("Height"), "%d",
827 p_stream->p_bih->biHeight );
829 p_stream->i_bitrate = 0;
831 /* Check for audio header (old format) */
832 else if( GetDWLE((oggpacket.packet+96)) == 0x05589F81 )
834 unsigned int i_extra_size;
836 p_stream->i_cat = AUDIO_ES;
838 i_extra_size = GetWLE((oggpacket.packet+140));
840 p_stream->p_wf = (WAVEFORMATEX *)
841 malloc( sizeof(WAVEFORMATEX) + i_extra_size );
842 if( !p_stream->p_wf )
844 /* Mem allocation error, just ignore the stream */
850 p_stream->p_wf->wFormatTag =
851 GetWLE((oggpacket.packet+124));
852 p_stream->p_wf->nChannels =
853 GetWLE((oggpacket.packet+126));
854 p_stream->f_rate = p_stream->p_wf->nSamplesPerSec =
855 GetDWLE((oggpacket.packet+128));
856 p_stream->i_bitrate = p_stream->p_wf->nAvgBytesPerSec =
857 GetDWLE((oggpacket.packet+132));
858 p_stream->i_bitrate *= 8;
859 p_stream->p_wf->nBlockAlign =
860 GetWLE((oggpacket.packet+136));
861 p_stream->p_wf->wBitsPerSample =
862 GetWLE((oggpacket.packet+138));
863 p_stream->p_wf->cbSize = i_extra_size;
865 if( i_extra_size > 0 )
866 memcpy( p_stream->p_wf+sizeof(WAVEFORMATEX),
867 oggpacket.packet+142, i_extra_size );
869 switch( p_stream->p_wf->wFormatTag )
871 case WAVE_FORMAT_PCM:
873 VLC_FOURCC( 'a', 'r', 'a', 'w' );
875 case WAVE_FORMAT_MPEG:
876 case WAVE_FORMAT_MPEGLAYER3:
878 VLC_FOURCC( 'm', 'p', 'g', 'a' );
880 case WAVE_FORMAT_A52:
882 VLC_FOURCC( 'a', '5', '2', ' ' );
884 case WAVE_FORMAT_WMA1:
886 VLC_FOURCC( 'w', 'm', 'a', '1' );
888 case WAVE_FORMAT_WMA2:
890 VLC_FOURCC( 'w', 'm', 'a', '2' );
893 p_stream->i_fourcc = VLC_FOURCC( 'm', 's',
894 ( p_stream->p_wf->wFormatTag >> 8 ) & 0xff,
895 p_stream->p_wf->wFormatTag & 0xff );
898 msg_Dbg( p_input, "found audio header of type: %.4s",
899 (char *)&p_stream->i_fourcc );
900 msg_Dbg( p_input, "audio:0x%4.4x channels:%d %dHz "
901 "%dbits/sample %dkb/s",
902 p_stream->p_wf->wFormatTag,
903 p_stream->p_wf->nChannels,
904 p_stream->p_wf->nSamplesPerSec,
905 p_stream->p_wf->wBitsPerSample,
906 p_stream->p_wf->nAvgBytesPerSec * 8 / 1024 );
908 char title[sizeof("Stream") + 10];
909 input_info_category_t *p_cat;
910 sprintf( title, "Stream %d", p_ogg->i_streams );
911 p_cat = input_InfoCategory( p_input, title );
912 input_AddInfo( p_cat, _("Type"), _("Audio") );
913 input_AddInfo( p_cat, _("Codec"), "%.4s",
914 (char *)&p_stream->i_fourcc );
915 input_AddInfo( p_cat, _("Sample Rate"), "%d",
916 p_stream->p_wf->nSamplesPerSec );
917 input_AddInfo( p_cat, _("Bit Rate"), "%d",
918 p_stream->p_wf->nAvgBytesPerSec * 8
920 input_AddInfo( p_cat, _("Channels"), "%d",
921 p_stream->p_wf->nChannels );
922 input_AddInfo( p_cat, _("Bits per Sample"), "%d",
923 p_stream->p_wf->wBitsPerSample );
929 msg_Dbg( p_input, "stream %d has an old header "
930 "but is of an unknown type", p_ogg->i_streams-1 );
935 else if( (*oggpacket.packet & PACKET_TYPE_BITS )
936 == PACKET_TYPE_HEADER &&
937 oggpacket.bytes >= (int)sizeof(stream_header)+1 )
939 stream_header *st = (stream_header *)(oggpacket.packet+1);
941 /* Check for video header (new format) */
942 if( !strncmp( st->streamtype, "video", 5 ) )
944 p_stream->i_cat = VIDEO_ES;
946 /* We need to get rid of the header packet */
947 ogg_stream_packetout( &p_stream->os, &oggpacket );
949 p_stream->p_bih = (BITMAPINFOHEADER *)
950 malloc( sizeof(BITMAPINFOHEADER) );
951 if( !p_stream->p_bih )
953 /* Mem allocation error, just ignore the stream */
958 p_stream->p_bih->biSize = sizeof(BITMAPINFOHEADER);
959 p_stream->p_bih->biCompression=
960 p_stream->i_fourcc = VLC_FOURCC( st->subtype[0],
964 msg_Dbg( p_input, "found video header of type: %.4s",
965 (char *)&p_stream->i_fourcc );
967 p_stream->f_rate = 10000000.0 /
968 GetQWLE(&st->time_unit);
969 p_stream->p_bih->biBitCount =
970 GetWLE(&st->bits_per_sample);
971 p_stream->p_bih->biWidth =
972 GetDWLE(&st->sh.video.width);
973 p_stream->p_bih->biHeight =
974 GetDWLE(&st->sh.video.height);
975 p_stream->p_bih->biPlanes= 1 ;
976 p_stream->p_bih->biSizeImage =
977 (p_stream->p_bih->biBitCount >> 3) *
978 p_stream->p_bih->biWidth *
979 p_stream->p_bih->biHeight;
982 "fps: %f, width:%i; height:%i, bitcount:%i",
983 p_stream->f_rate, p_stream->p_bih->biWidth,
984 p_stream->p_bih->biHeight,
985 p_stream->p_bih->biBitCount);
988 char title[sizeof("Stream") + 10];
989 input_info_category_t *p_cat;
990 sprintf( title, "Stream %d", p_ogg->i_streams );
991 p_cat = input_InfoCategory( p_input, title );
992 input_AddInfo( p_cat, _("Type"), _("Video") );
993 input_AddInfo( p_cat, _("Codec"), "%.4s",
994 (char *)&p_stream->i_fourcc );
995 input_AddInfo( p_cat, _("Frame Rate"), "%f",
997 input_AddInfo( p_cat, _("Bit Count"), "%d",
998 p_stream->p_bih->biBitCount );
999 input_AddInfo( p_cat, _("Width"), "%d",
1000 p_stream->p_bih->biWidth );
1001 input_AddInfo( p_cat, _("Height"), "%d",
1002 p_stream->p_bih->biHeight );
1004 p_stream->i_bitrate = 0;
1006 /* Check for audio header (new format) */
1007 else if( !strncmp( st->streamtype, "audio", 5 ) )
1011 p_stream->i_cat = AUDIO_ES;
1013 /* We need to get rid of the header packet */
1014 ogg_stream_packetout( &p_stream->os, &oggpacket );
1016 p_stream->p_wf = (WAVEFORMATEX *)
1017 malloc( sizeof(WAVEFORMATEX) );
1018 if( !p_stream->p_wf )
1020 /* Mem allocation error, just ignore the stream */
1026 memcpy( p_buffer, st->subtype, 4 );
1028 p_stream->p_wf->wFormatTag = strtol(p_buffer,NULL,16);
1029 p_stream->p_wf->nChannels =
1030 GetWLE(&st->sh.audio.channels);
1031 p_stream->f_rate = p_stream->p_wf->nSamplesPerSec =
1032 GetQWLE(&st->samples_per_unit);
1033 p_stream->i_bitrate = p_stream->p_wf->nAvgBytesPerSec =
1034 GetDWLE(&st->sh.audio.avgbytespersec);
1035 p_stream->i_bitrate *= 8;
1036 p_stream->p_wf->nBlockAlign =
1037 GetWLE(&st->sh.audio.blockalign);
1038 p_stream->p_wf->wBitsPerSample =
1039 GetWLE(&st->bits_per_sample);
1040 p_stream->p_wf->cbSize = 0;
1042 switch( p_stream->p_wf->wFormatTag )
1044 case WAVE_FORMAT_PCM:
1045 p_stream->i_fourcc =
1046 VLC_FOURCC( 'a', 'r', 'a', 'w' );
1048 case WAVE_FORMAT_MPEG:
1049 case WAVE_FORMAT_MPEGLAYER3:
1050 p_stream->i_fourcc =
1051 VLC_FOURCC( 'm', 'p', 'g', 'a' );
1053 case WAVE_FORMAT_A52:
1054 p_stream->i_fourcc =
1055 VLC_FOURCC( 'a', '5', '2', ' ' );
1057 case WAVE_FORMAT_WMA1:
1058 p_stream->i_fourcc =
1059 VLC_FOURCC( 'w', 'm', 'a', '1' );
1061 case WAVE_FORMAT_WMA2:
1062 p_stream->i_fourcc =
1063 VLC_FOURCC( 'w', 'm', 'a', '2' );
1066 p_stream->i_fourcc = VLC_FOURCC( 'm', 's',
1067 ( p_stream->p_wf->wFormatTag >> 8 ) & 0xff,
1068 p_stream->p_wf->wFormatTag & 0xff );
1071 msg_Dbg( p_input, "found audio header of type: %.4s",
1072 (char *)&p_stream->i_fourcc );
1073 msg_Dbg( p_input, "audio:0x%4.4x channels:%d %dHz "
1074 "%dbits/sample %dkb/s",
1075 p_stream->p_wf->wFormatTag,
1076 p_stream->p_wf->nChannels,
1077 p_stream->p_wf->nSamplesPerSec,
1078 p_stream->p_wf->wBitsPerSample,
1079 p_stream->p_wf->nAvgBytesPerSec * 8 / 1024 );
1081 char title[sizeof("Stream") + 10];
1082 input_info_category_t *p_cat;
1083 sprintf( title, "Stream %d", p_ogg->i_streams );
1084 p_cat = input_InfoCategory( p_input, title );
1085 input_AddInfo( p_cat, _("Type"), _("Audio") );
1086 input_AddInfo( p_cat, _("Codec"), "%.4s",
1087 (char *)&p_stream->i_fourcc );
1088 input_AddInfo( p_cat, _("Sample Rate"), "%d",
1089 p_stream->p_wf->nSamplesPerSec );
1090 input_AddInfo( p_cat, _("Bit Rate"), "%d",
1091 p_stream->p_wf->nAvgBytesPerSec * 8
1093 input_AddInfo( p_cat, _("Channels"), "%d",
1094 p_stream->p_wf->nChannels );
1095 input_AddInfo( p_cat, _("Bits per Sample"), "%d",
1096 p_stream->p_wf->wBitsPerSample );
1099 /* Check for text (subtitles) header */
1100 else if( !strncmp(st->streamtype, "text", 4) )
1102 /* We need to get rid of the header packet */
1103 ogg_stream_packetout( &p_stream->os, &oggpacket );
1105 msg_Dbg( p_input, "found text subtitles header" );
1106 p_stream->i_cat = SPU_ES;
1107 p_stream->i_fourcc =
1108 VLC_FOURCC( 's', 'u', 'b', 't' );
1109 p_stream->f_rate = 1000; /* granulepos is in milisec */
1113 msg_Dbg( p_input, "stream %d has a header marker "
1114 "but is of an unknown type", p_ogg->i_streams-1 );
1121 msg_Dbg( p_input, "stream %d is of unknown type",
1122 p_ogg->i_streams-1 );
1129 if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
1130 return VLC_EGENERIC;
1133 /* This is the first data page, which means we are now finished
1134 * with the initial pages. We just need to store it in the relevant
1136 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1138 if( ogg_stream_pagein( &p_ogg->pp_stream[i_stream]->os,
1147 return VLC_EGENERIC;
1150 /*****************************************************************************
1151 * Activate: initializes ogg demux structures
1152 *****************************************************************************/
1153 static int Activate( vlc_object_t * p_this )
1155 input_thread_t *p_input = (input_thread_t *)p_this;
1159 p_input->p_demux_data = NULL;
1160 b_forced = ( ( *p_input->psz_demux )&&
1161 ( !strncmp( p_input->psz_demux, "ogg", 10 ) ) ) ? 1 : 0;
1163 /* Check if we are dealing with an ogg stream */
1164 if( !b_forced && ( Ogg_Check( p_input ) != VLC_SUCCESS ) )
1167 /* Allocate p_ogg */
1168 if( !( p_ogg = malloc( sizeof( demux_sys_t ) ) ) )
1170 msg_Err( p_input, "out of memory" );
1173 memset( p_ogg, 0, sizeof( demux_sys_t ) );
1174 p_input->p_demux_data = p_ogg;
1175 p_ogg->pp_stream = NULL;
1176 p_ogg->p_stream_video = NULL;
1177 p_ogg->p_stream_audio = NULL;
1178 p_ogg->p_stream_spu = NULL;
1180 /* Initialize the Ogg physical bitstream parser */
1181 ogg_sync_init( &p_ogg->oy );
1183 /*Set exported functions */
1184 p_input->pf_demux = Demux;
1185 p_input->pf_demux_control = Control;
1187 /* Initialize access plug-in structures. */
1188 if( p_input->i_mtu == 0 )
1190 /* Improve speed. */
1191 p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
1194 /* Create one program */
1195 vlc_mutex_lock( &p_input->stream.stream_lock );
1196 if( input_InitStream( p_input, 0 ) == -1)
1198 vlc_mutex_unlock( &p_input->stream.stream_lock );
1199 msg_Err( p_input, "cannot init stream" );
1202 if( input_AddProgram( p_input, 0, 0) == NULL )
1204 vlc_mutex_unlock( &p_input->stream.stream_lock );
1205 msg_Err( p_input, "cannot add program" );
1208 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
1209 vlc_mutex_unlock( &p_input->stream.stream_lock );
1211 /* Begnning of stream, tell the demux to look for elementary streams. */
1212 p_ogg->b_eos = VLC_TRUE;
1217 Deactivate( (vlc_object_t *)p_input );
1222 /****************************************************************************
1223 * Ogg_BeginningOfStream: Look for Beginning of Stream ogg pages and add
1224 * Elementary streams.
1225 ****************************************************************************/
1226 static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg)
1230 /* Find the logical streams embedded in the physical stream and
1231 * initialize our p_ogg structure. */
1232 if( Ogg_FindLogicalStreams( p_input, p_ogg ) != VLC_SUCCESS )
1234 msg_Warn( p_input, "couldn't find any ogg logical stream" );
1235 return VLC_EGENERIC;
1238 vlc_mutex_lock( &p_input->stream.stream_lock );
1239 p_input->stream.i_mux_rate = 0;
1240 vlc_mutex_unlock( &p_input->stream.stream_lock );
1242 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1244 #define p_stream p_ogg->pp_stream[i_stream]
1245 vlc_mutex_lock( &p_input->stream.stream_lock );
1246 p_stream->p_es = input_AddES( p_input,
1247 p_input->stream.p_selected_program,
1249 p_stream->i_cat, NULL, 0 );
1250 p_input->stream.i_mux_rate += (p_stream->i_bitrate / ( 8 * 50 ));
1251 vlc_mutex_unlock( &p_input->stream.stream_lock );
1252 p_stream->p_es->i_stream_id = i_stream;
1253 p_stream->p_es->i_fourcc = p_stream->i_fourcc;
1254 p_stream->p_es->p_waveformatex = (void*)p_stream->p_wf;
1255 p_stream->p_es->p_bitmapinfoheader = (void*)p_stream->p_bih;
1257 p_stream->i_pcr = p_stream->i_previous_pcr = -1;
1258 p_stream->b_reinit = 0;
1262 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1264 #define p_stream p_ogg->pp_stream[i_stream]
1265 switch( p_stream->p_es->i_cat )
1268 if( (p_ogg->p_stream_video == NULL) )
1270 p_ogg->p_stream_video = p_stream;
1271 /* TODO add test to see if a decoder has been found */
1272 Ogg_ElemStreamStart( p_input, p_ogg, i_stream );
1277 if( (p_ogg->p_stream_audio == NULL) )
1279 int i_audio = config_GetInt( p_input, "audio-channel" );
1280 if( i_audio == i_stream || i_audio <= 0 ||
1281 i_audio >= p_ogg->i_streams ||
1282 p_ogg->pp_stream[i_audio]->p_es->i_cat != AUDIO_ES )
1284 p_ogg->p_stream_audio = p_stream;
1285 Ogg_ElemStreamStart( p_input, p_ogg, i_stream );
1291 if( (p_ogg->p_stream_spu == NULL) )
1293 /* for spu, default is none */
1294 int i_spu = config_GetInt( p_input, "spu-channel" );
1295 if( i_spu < 0 || i_spu >= p_ogg->i_streams ||
1296 p_ogg->pp_stream[i_spu]->p_es->i_cat != SPU_ES )
1300 else if( i_spu == i_stream )
1302 p_ogg->p_stream_spu = p_stream;
1303 Ogg_ElemStreamStart( p_input, p_ogg, i_stream );
1314 /* we select the first audio and video ES */
1315 vlc_mutex_lock( &p_input->stream.stream_lock );
1316 if( !p_ogg->p_stream_video )
1318 msg_Warn( p_input, "no video stream found" );
1320 if( !p_ogg->p_stream_audio )
1322 msg_Warn( p_input, "no audio stream found!" );
1324 p_input->stream.p_selected_program->b_is_ok = 1;
1325 vlc_mutex_unlock( &p_input->stream.stream_lock );
1330 /****************************************************************************
1331 * Ogg_EndOfStream: clean up the ES when an End of Stream is detected.
1332 ****************************************************************************/
1333 static void Ogg_EndOfStream( input_thread_t *p_input, demux_sys_t *p_ogg )
1337 #define p_stream p_ogg->pp_stream[i_stream]
1338 vlc_mutex_lock( &p_input->stream.stream_lock );
1339 if( p_input->stream.i_pgrm_number )
1340 while( p_input->stream.p_selected_program->i_es_number )
1342 input_DelES( p_input,
1343 p_input->stream.p_selected_program->pp_es[0] );
1345 vlc_mutex_unlock( &p_input->stream.stream_lock );
1348 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1350 #define p_stream p_ogg->pp_stream[i_stream]
1351 vlc_mutex_lock( &p_input->stream.stream_lock );
1352 p_input->stream.i_mux_rate -= (p_stream->i_bitrate / ( 8 * 50 ));
1353 vlc_mutex_unlock( &p_input->stream.stream_lock );
1356 ogg_stream_clear( &p_ogg->pp_stream[i_stream]->os );
1357 for( j = 0; j < p_ogg->pp_stream[i_stream]->i_packets_backup; j++ )
1359 free( p_ogg->pp_stream[i_stream]->p_packets_backup[j].packet );
1361 if( p_ogg->pp_stream[i_stream]->p_packets_backup)
1362 free( p_ogg->pp_stream[i_stream]->p_packets_backup );
1364 #if 0 /* hmmm, it's already freed in input_DelES() */
1365 if( p_ogg->pp_stream[i]->p_bih )
1366 free( p_ogg->pp_stream[i]->p_bih );
1367 if( p_ogg->pp_stream[i]->p_wf )
1368 free( p_ogg->pp_stream[i]->p_wf );
1371 free( p_ogg->pp_stream[i_stream] );
1375 if( p_ogg->pp_stream ) free( p_ogg->pp_stream );
1376 p_ogg->pp_stream = NULL;
1377 p_ogg->i_streams = 0;
1378 p_ogg->p_stream_video = NULL;
1379 p_ogg->p_stream_audio = NULL;
1380 p_ogg->p_stream_spu = NULL;
1383 /*****************************************************************************
1384 * Deactivate: frees unused data
1385 *****************************************************************************/
1386 static void Deactivate( vlc_object_t *p_this )
1388 input_thread_t *p_input = (input_thread_t *)p_this;
1389 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
1393 /* Cleanup the bitstream parser */
1394 ogg_sync_clear( &p_ogg->oy );
1396 Ogg_EndOfStream( p_input, p_ogg );
1402 /*****************************************************************************
1403 * Demux: reads and demuxes data packets
1404 *****************************************************************************
1405 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1406 *****************************************************************************/
1407 static int Demux( input_thread_t * p_input )
1409 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data;
1411 ogg_packet oggpacket;
1416 if( Ogg_BeginningOfStream( p_input, p_ogg ) != VLC_SUCCESS ) return 0;
1417 p_ogg->b_eos = VLC_FALSE;
1419 msg_Dbg( p_input, "beginning of a group of logical streams" );
1421 p_input->stream.p_selected_program->i_synchro_state = SYNCHRO_REINIT;
1422 input_ClockManageRef( p_input, p_input->stream.p_selected_program, 0 );
1425 #define p_stream p_ogg->pp_stream[i_stream]
1427 /* detect new selected/unselected streams */
1428 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1430 if( p_stream->p_es )
1432 if( p_stream->p_es->p_decoder_fifo &&
1433 !p_stream->i_activated )
1435 Ogg_ElemStreamStart( p_input, p_ogg, i_stream );
1438 if( !p_stream->p_es->p_decoder_fifo &&
1439 p_stream->i_activated )
1441 Ogg_ElemStreamStop( p_input, p_ogg, i_stream );
1446 /* search for new video and audio stream to select
1447 * if current have been unselected */
1448 if( ( !p_ogg->p_stream_video )
1449 || ( !p_ogg->p_stream_video->p_es->p_decoder_fifo ) )
1451 p_ogg->p_stream_video = NULL;
1452 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1454 if( ( p_stream->i_cat == VIDEO_ES )
1455 &&( p_stream->p_es->p_decoder_fifo ) )
1457 p_ogg->p_stream_video = p_stream;
1462 if( ( !p_ogg->p_stream_audio )
1463 ||( !p_ogg->p_stream_audio->p_es->p_decoder_fifo ) )
1465 p_ogg->p_stream_audio = NULL;
1466 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1468 if( ( p_stream->i_cat == AUDIO_ES )
1469 &&( p_stream->p_es->p_decoder_fifo ) )
1471 p_ogg->p_stream_audio = p_stream;
1477 if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
1479 msg_Warn( p_input, "synchro reinit" );
1481 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1483 /* we'll trash all the data until we find the next pcr */
1484 p_stream->b_reinit = 1;
1485 p_stream->i_pcr = -1;
1486 p_stream->i_interpolated_pcr = -1;
1492 * Demux an ogg page from the stream
1494 if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
1499 /* Test for End of Stream */
1500 if( ogg_page_eos( &oggpage ) )
1502 msg_Dbg( p_input, "end of a group of logical streams" );
1504 Ogg_EndOfStream( p_input, p_ogg );
1505 p_ogg->b_eos = VLC_TRUE;
1509 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1511 if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
1514 while( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
1516 if( !p_stream->p_es )
1521 if( p_stream->b_reinit )
1523 /* If synchro is re-initialized we need to drop all the packets
1524 * until we find a new dated one. */
1525 Ogg_UpdatePCR( p_stream, &oggpacket );
1527 if( p_stream->i_pcr >= 0 )
1529 p_stream->b_reinit = 0;
1533 p_stream->i_interpolated_pcr = -1;
1537 /* An Ogg/vorbis packet contains an end date granulepos */
1538 if( p_stream->i_fourcc == VLC_FOURCC( 'v','o','r','b' ) ||
1539 p_stream->i_fourcc == VLC_FOURCC( 's','p','x',' ' ) )
1541 if( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
1543 Ogg_DecodePacket( p_input, p_stream, &oggpacket );
1549 Ogg_DecodePacket( p_input, p_stream, &oggpacket );
1554 i_stream = 0; p_ogg->i_pcr = -1;
1555 for( ; i_stream < p_ogg->i_streams; i_stream++ )
1557 if( p_stream->i_cat == SPU_ES )
1559 if( p_stream->i_interpolated_pcr < 0 )
1562 if( p_ogg->i_pcr < 0 || p_stream->i_interpolated_pcr < p_ogg->i_pcr )
1563 p_ogg->i_pcr = p_stream->i_interpolated_pcr;
1566 if( p_input->stream.p_selected_program->i_synchro_state != SYNCHRO_REINIT )
1568 input_ClockManageRef( p_input, p_input->stream.p_selected_program,
1577 /*****************************************************************************
1579 *****************************************************************************/
1580 static int Control( input_thread_t *p_input, int i_query, va_list args )
1582 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data;
1587 case DEMUX_GET_TIME:
1588 pi64 = (int64_t*)va_arg( args, int64_t * );
1589 *pi64 = p_ogg->i_pcr * 100 / 9;
1593 return demux_vaControlDefault( p_input, i_query, args );